Indestructible marking device for castings.



E. FERRISS. INDESTRUCTIBLE MARKING DEVICE FOR CASTINGS.

APPLICATION HLED SEPT. ll. I916.

' Patented Jan. 1 1918 e4925ea-cLAss-c ABCDEFG 0 00000 00 00000 0000060 I O O 0 0 0 0 2/ g'fzin eases YMM UNITED STATES PATENT OFFICE;-

EDWARD FERBISS, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR T WILLIAM KLSCHWAB,

OF MINNEAPOLIS, MINNESOTA.

INDESTRUCTIIBLE MARKING DEVICE FOR CASTINGS.

- Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Indestructible Marking Devices for Castings; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as willfienable others skilled in the art to which it appertains to make and use thesame. l

Mypresent invention relates to the mark ings of castings for the identification thereof and hasfor its object to provide inde;

structihle marking devices that. cannot be obliterated by cutting, other mutilations- While said invention is adapted tomark all castings requiring .identifying characters, it is especially adapted formarkin'g the engine cylinders, chassis, or other parts of a motor-driven vehicle; As is well known, when an automobile is stolem the thief, be- 7 in. At the time the cylinder 1 is cast, there fore using-or offering the same for sale, removes hychiselingorfiling all identifying characters cast onthe engine cylinders or other parts'of the machine, in order to'pleventdetectiomqi To the above end, the invention consists of. the novel devices and combinations of (le vices hereinafter described and defined in the claims. t

In the accompanv ng drawings. winch I illustrate the invention, like characters indieate like parts throughout the several views.

Referring to the drawings;

Figure l is a fragmentary side elevation of an internal combustion engine cylinder having its identifying character produced by casting therein indestructible marking pins and scale alining posts. The identitying character for the tegral therewith in raised numerals and letters;

Fig. 2 is a vertical section taken on the line 2-2 of Fig. 1;

Fig. 3 is a plan view of a telnplet holding the pins in a relative arrangement indi ating the identifving chararder of the vasting shown in Fig. l and also holding lllt' scale alining posts;

Fig. 4 is a perspective view of one of the alining posts;

Fig. 5 is a perspective view of one of the identifying character pins;

' Specification 0t Letters Patent.

filing, wearing, on

.in Fig. 6.

The numeral Lnnhcates anenglnecyhn-i casting is also east, in-- Patented Jan. 1,1918.

Application flied September 11, 1916. Saris 1R0. 119,441.

positioned in the casting with the exception that the identifying character is not duplicated and cast integral therewith in ra1sed letters, and has illustrated thereon, by means of broken lines, a

straight edge laid on the vertical posts for guiding the scale, shown in Fig.-7,- in locatingQthe "pins which produce the number of the casting, as representcdin'F-ig.

Fig.0 is ajvicw corresponding to l laid on the horizontal posts: for guiding the scale in locating the pin, which represents the class letter. of the casting, as represented der having the invention incorporated thereis east thereina multiplicity of vertically and horizontally spaced pins. 2. and scale alining'postsfl. As shown, theseipins .2 and 1 as held by the templet 6.5 and ig..8,, A withthe-exception thatthe straight"edge is" i Before the cylinder 1 is cast, a sullieient number of thepins to indicate the identifying elniracter ol' the cylinder, are set into the green sand or into the core. at the time the same is made, and lhus held during the ill] casting of the oylinder. -ln order, that the pins and posts It may be properly positioned in the sand, to clearly and correctly represent lhe. idenlit'ying character of the cylinder or other casting. I provide :1 tom plel 4. This telnplet. as shown, has formed therein eleven vertical rows of holes 5. 'lhere are seven of these holes in each vertiral row and the holesol' the eleven rows are in horizontal alinenn-nl. The holes 5 in the lrlnplel. =l are spared holh verti ally and horizontally equal distances apart, as shown. They are one-quarter ol' an inch lu-l ween venlers.

'Iho lirst ten vertical rows of holes 5, from the left to the right, are identified. respec lively, hy the digits 1 to t) marked on the tenlph-l 4 therealnive. "l'he seven holes in the eleventh vertical row are identified, respectively, by the letters A to (i, inclusive,

20 and horizontal rows of holes and have surfaces that extend parallel to said 'rows. After the pins- 2- and posts 3 arev set in the sand, the templet 4 is removed therefrom." 26

reading from the top' down, and said letters are marked on the templet 4 at the right of said, row. By thus identifying certain rows of the holes 5 by the digits and certain otherof said holes by the letters of thealphabet,

the pins 2, positioned by the templet 4, draw their numbers and class letter from the relative positions they occupy. Forexample, if the pins 2 were set on a quarter inch scale, as shown, the numeral 1 would come within the "first quarter and the numeral 2 within thosecond quarter and so on throughout the he templet 4 also has formed therein, at

its two upper corners and lower left hand corner, holes 6] to receive and hold thejscale .alining posts- 3 to properly position the same -1Il the sand with the pins 2. As shown, theseholes 6 for the scale alinin posts 3 are located outside of the vertica- To facilitate the reading of the identi ing character of a castin producedhy t e pins 2, there is illustrate in Figs. 7, 8 and 9 a specialscale 7. This scale 7 has its upper and right hand edges 'graduatedzto the same scale as the spacing of theholes 5 in the templet 4 and said graduations are identified in the same manner as said holes. That is, the horizontahgraduations on the scale 7 are indicated by the digits and the vertical graduations by the first seven let'- ters of the alphabet.

In reading the number of the cylinder 1', a straight edge 8, diagrammatically illustrated by means of broken lines, is laced on the two vertical posts 3 (see Fig. 8 and the scale 7 placed against the right hand edge thereof. Witlrthe scale 7 in this posit1on, the same is moved downward over the pins 2 underlying the digii numerals they represent by the positions they occupy are notedand, as illustrated,

read 6492583. To determine the class in which the cylinder 1 comes, the straight edge 8 is placed on the horizontally alined pair of posts 3 (see Fig. 9), and the upper edge of the scale 7 placed against the lower edge thereof. The scale is then moved to carry its right hand edge into alinement with the pin 2. in the eleventh vertical row to determine its position. It will be noted, by reference to Fig. 9, that this pin occupics the third position, which identifies the casting as coming in class-4i. From the above, it will be noted that the identifying character of the cylinder 1 is as appears in Fig. 6. r

In place of the straight edge 8, lines may and the be scratched or marked on the cylinder 1. between the horizontally and vertically alined pairs of osts- 3, for the purpose of guidin the scae 7. The reading of tinidenti ying character of a casting may be. accomplished witlran. ordinary rule, when the scale is once known, and this, of course, would be very easy to determine. In order that the pins 2 and posts mav be easily distinguished, when the sazne are cut and finished even with the casting, the same are preferably made of a difi'crent material.

' For instance, if they were wrought iron,

they could be easily distinguished from the cast metal.

The cylinder 1, in Fig. 1,'has cast integral therewith in raised numerals and letters the identifying character of the cylinder, as represented by the )ine: 2. This double marking of the cylin er 1 affords, through the raised nu'merals'and letters, easy means for identifying the cylinder and, through the,pins,2, ideutifying means that cannot be destroycdn" The pins2' and osts 3 are represented as round and triangu ar in cross section, respectively, but.1t 1s, of course, un-

derstood that they may 'bemade in various difl'erentshapes. They may also be made. .splral'or mother irregular forms to prevent elements in a relative arrangement indicating an identifying character.

"2. A casting having cast 'in the body thereof, a multiplicity of character forming elements in a relative arrangement indicating an identifying character, the said identifying elements being of a metal differing from the casting in'character and appearance.

3. A casting having cast in the body thereof, a multiplicity of character forming elements in a relative arrangement indicating an identifying-character, the said identifying elements being in bifactored arrangement.

4. A casting having cast therein, a multiglicity of character indicating elements in ifactored arrangement and having scale alining elements located outside of and parallel with the alined rows in said bifactored elements.

In testimony whereof I aflix my signature in presence of two witnesses.

EDWARD FERRISS.

\Vitnesses:

MAY A. SMITH, HARRY D. Kimmie. 

